package edu.gatech.oad.antlab.person;

/**
 *  A simple class for person 1
 *  returns their name and a
 *  modified string 
 *  
 *  @author Bob
 *  @version 1.1
 */
public class Person4 {
  /** Holds the persons real name */
  private String name;
    /**
     * The constructor, takes in the persons
     * name
     * @param pname the person's real name
     */
  public Person4(String pname) {
    name = pname;
  }
    /**
     * This method should take the string
     * input and return its characters rotated
     * 2 positions.
     * given "gtg123b" it should return
     * "g123bgt".
     *
     * @param input the string to be modified
     * @return the modified string
     */
    private String calc(String input) {
  	  int length = input.length();
  	  String temp1;
  	  String temp2;
  	  if(length == 0){
  		  return null;
  	  }
  	  else if(length == 2){
  		  return input;
  	  }
  	  else{
  		  for(int i=0; i<2; i++){
  			  temp1 = input.substring(0, 1);
  			  temp2 = input.substring(1, length-1);
  			  input = temp2 + temp1;
  		  }
  		  return input;
  	  }
    }
    
    /**
     * Return a string rep of this object
     * that varies with an input string
     *
     * @param input the varying string
     * @return the string representing the 
     *         object
     */
    public String toString(String input) {
      return name + calc(input);
    }

}

